Hi.

The best is always HazOp, second FMCA.

all type of risk assessment methods could be applied for pipeline but i think best method is combination of FTA and FMEA

all type of risk assessment methods could be applied for pipeline but i think best method is combination of FTA and FMEA

In addition to HAZOP and RCM (RCM is basically an extension of FMEA), I would suggest RBI (particularly for O&G applications).  The API 580 and 581 standards, describe the procedure, and cover piping amongst various static equipment.  The whole concept is based on selecting known Damage Mechanisms (DM) based on the equipment type, construction material, process parameters, environmental factors, etc., and performing a risk assessment relative to these DM(s).

Thank you all i already tried FTA,HAZOP,FMEA  i am looking for something specific/New .

Adamantios Mettas thank you for the useful informations

Dear zine,

I think you can use form and sorm method to analyse reliability and probability of failures. its a very good outil and a new method.

best regards

I would suggest for Fault Tree and Event Tree Analysis; first the deterministic aspect and then the probabilistic formulation.

It depends what you are trying to achieve, i.e. your objectives.  If the aim is to produce the safest pipeline within a cost limitation, then the method is described in my paper is suitable. I used the risk matrix to filter out less important hazards then AHP to rank the remaining hazards. This tells you where you should spent your budget.  You can use my method to measure the effect of the improvement of an existing pipeline. An alternative to my approach is a simple indexing method.

Of course the result of the above effort is a safer pipeline with a less impact on the population and the environment. However, if the effect of a pipeline on populations and environment along the route is the aim, then you need quantitative methods. There are a few hazards that affect the population and environment which are spills, explosion, fire, toxicity etc. For this you need a specific case which tells you the population density and proximity, soil and weather condition, etc. Regulators are interested in this sort of analysis for granting permission. There is a large literature on this subject.

If you are a practicing engineer and designing a pipeline, then my approach is useful. But if you are a safety engineer and deciding if the routing of a pipeline is safe, then the second approach is useful.

I gather you are looking for a topic for your dissertation. Write to me and tell me what are your aims, then I can direct you towards something concrete.  There are many things you can do for a thesis, including using fuzzy-AHP, Fuzzy TOPSIS and so on.

Best Regards

Sirous Yasseri

Perhaps I'm missing something but HAZOP is not usually considered to be a Risk Analysis technique - it is a hazards identification technique.

Risk assessment associated with a particular failure and its hazardous consequences (e.g. failure frequencies of  the initiating event, protective barriers, loss of containment, mitigating protection systems, etc.) may be considered during a HAZOP, but I find that this can distract from the main HAZOP intent of identifying the potential hazards resulting from a failure to meet the design intent.

I'm concerned that the comments so far don't appear to have made this distinction which could be misleading to the original questioner.

As a starting point I would recommend that you look at the semi-quantitive LOPA techniques, particularly the Bow-tie-based cumulative methodology. See the following article for a good summary of this technique.

https://www.linkedin.com/pulse/20141203000004-66584324-bowtie-visual-aid-to-reduce-spurious-trips-and-nuisance-alarms

 Bayesian Network could be used as the risk analysis tool which is recently becoming a popular probabilistic inference technique for reasoning under uncertainty in reliability and system safety engineering. BN network is used to estimate the probability of failure  and to update the  probabilities of events when new information is available.

Hi,

I think the fuzee tree its largely used.

In french its "arbre de défaillance" in english fuzzy tree.

i agree with Roland  it is FTA, Fuzzy tree maybe is something else no ?!

Zine view this paper it can help you "Estimation of failure probability of oil and gas transmission pipelines by fuzzy fault tree analysis''.

I also think that probabilistic fault and event tree analysis can be useful. NASA has a number of publications on this, for obvious reasons. The fuzzy aspect of the question apply if the question has to do with the representation of the incertitude (not uncertainty). If so, you might use fuzzy controllers to generate a crisp answer, the one you want, I suppose.

My sense is that the pipe/pump systems are often sufficiently well understood that using probabilistic methods would be enough to bound the answer to your question.

Concerning safety of pipelines, and in addition to general purpose probabilistic approaches as previously mentioned, there are more precise deterministic ones such as the following:

• Rigas F., “Safety of Buried Pressurized Gas Pipelines near Explosion Sources”, 1st Annual Gas Processing Symposium, 10-12 January 2009, p.p. 307-316, Doha, Qatar.
• ·Sklavounos S. and F. Rigas, 2006, Estimation of Safety Distances in the Vicinity of Fuel Gas Pipelines, Journal of Loss Prevention in the Process Industries, 19, 24-31.
• ·Rigas F. and I. Sebos, 1999, Amplification Effects of Soil Stratification on Ground Stress Waves, J. Geotech. Geoenviron. Eng. - ASCE, 611-614.
• ·Rigas F. and I. Sebos, 1998, Shortcut Estimation of Safety Distances of Pipelines from Explosives, J. Transp. Eng. - ASCE, 200-204.
• Dowding H. Charles, 1996, Construction Vibrations, Prentice-Hall, USA.
• ·Siskind D.E. and Stagg M.S., 1994, Surface Mine Blasting near Transmission Pipelines, Mining Engineering, pp. 1357.

You may find most of them in my pages in ResearchGate.

Good luck with your research.

thank you dear Dr and Pro

There are several articles of mine in the ResearchGate, please download.....

Noted Dr Huseyin. thank you 

i will get back to you with some questions

Dear Zine,

I think the major problem that can happen to the pipeline is corrosion, followed by ground tromblement problems; a study that was realized by chinese class corrrosion in first place among the problem that alters pipelines

Download Aloha risk analysis software. It depends on what kind of fluid your pipeline is containing?

Please go through my recent papers in the RESEARCHGATE...Get back to me if you have specific questions..

Dear Kamal Mohammedi thank you for your reply

have Aloha and Official version of Phast

Dear Huseyin Murat thank you for your comment . i did and i will do it again

regards

You can refer the Pipeline Risk Management Manual

thanks